Typically those that target feed do see greater growth. Target feeding basically increases the ability to not only grow faster, but to reproduce more readily and keep a high state of health. Also, even though Melosu states he doesn't specifically try to target feed, he does state his corals will capture food particles floating by, which is indirect feeding yet feeding nonetheless. Either way, there are more variables to consider than his feeding habits as to why he gets exceptional growth
As for the types of food to feed, go with mysis, krill, eggs (no, not chicken of the sea), zooplankton, etc. They are usually aggressive feeders once they get in a routine.